Term Name:	sphingolipid C4-monooxygenase activity
Synonyms:	sphingolipid long-chain base 4-hydroxylase activity
Definition:	Catalysis of the reaction: a dihydroceramide + 2 Fe(II)-[cytochrome b5] + 2 H+ + O2 = a phytoceramide + 2 Fe(III)-[cytochrome b5] + H2O.
Ontology:	GO: Molecular Function [GO:0102772]    QuickGO    AmiGO